Improvement on the Parallel Interference Cancellation Receiver for Uplink MC-CDMA System
Wang Hua-kui · Modern Electronics Technique · 2007
For uplink MC-CDMA system,a Parallel Interference Cancellation(PIC) multiuser receiver employed linear MMSE detection as the initial stage is introduced.In order to reduce the error propagation brought by the inaccuracy of initial decision,a novel multistage partial PIC receiver which is achieved by means of the multiplication by a different partial cancellation factor at each stage is proposed.Without consideration of channel estimation error,the effect of different users and different partial cancellation factors on the improved receiver is simulated.simulation results indicate that the improved receiver can be obtained better BER performance.